feat(usage): add toggle to hide prediction rows on usage cards (#1420)

* feat(usage): add showPredValues setting to quota store

* feat(usage): register usageShowPredValues in settings sanitizers

* feat(usage): add i18n key for show predictions toggle

* feat(usage): add show predictions toggle to sidebar

* feat(usage): hide pred row by default, gate on showPredValues

* fix(usage): gate header dropdown PaceIndicator behind showPredValues

* fix(usage): gate VSCodeLayout PaceIndicator behind showPredValues

* fix(usage): correct indentation drift in Header.tsx PaceIndicator blocks

packages/ui/src/components/layout/VSCodeLayout.tsx

@@ -582,6 +582,7 @@ const VSCodeHeader: React.FC<VSCodeHeaderProps> = ({ title, showBack, onBack, on
   const isQuotaLoading = useQuotaStore((state) => state.isLoading);
   const quotaLastUpdated = useQuotaStore((state) => state.lastUpdated);
   const quotaDisplayMode = useQuotaStore((state) => state.displayMode);
+  const showPredValues = useQuotaStore((state) => state.showPredValues);
   const dropdownProviderIds = useQuotaStore((state) => state.dropdownProviderIds);
   const loadQuotaSettings = useQuotaStore((state) => state.loadSettings);
   const setQuotaDisplayMode = useQuotaStore((state) => state.setDisplayMode);
@@ -892,7 +893,7 @@ const VSCodeHeader: React.FC<VSCodeHeaderProps> = ({ title, showBack, onBack, on
                                 className="h-1"
                                 expectedMarkerPercent={expectedMarker}
                               />
-                              {paceInfo && (
+                              {paceInfo && showPredValues && (
                                 <div className="mt-0.5">
                                   <PaceIndicator paceInfo={paceInfo} compact />
                                 </div>